G.C.S.E.'s are easy. Well, they are compared to A/S Level.
Just relax, take your time, watch a few Bitesize programmes and take your time.
It's good to revise for 20 mins, have a break for 10 mins, then revise for 20 mins, then have a break for 10 mins..................... and so on, and so on!
R E L A X ! ! !
NOOOOOOOOOOOOOOOOOOOO! Don't watch bitesize. That is revision suicide! I tried that and soon realised that it bore no relevance to my syllabus whatsoever. At GCSE they are two diverse for some national revision programme to actually work properly. Just revise the notes your teachers have given you. That is the best way. Believe it or not they do actually know what they are doing!
Well in some cases it is useful but you MUST make sure beforehand that it is related to your syllabus. It is no good revising something you didn't need to learn. Particularly important for something like English or History. But I still maintain your own notes are the best thing to revise from. At GCSE level the stuff your teachers give you is pretty much all you need. It isn't till you get to A level that you are expected to be able to find your own material for this kind of stuff. But I guess soem of the bitesizes might be useful. It all depends on how you revise best.